• Thumbnail for Earth Gravitational Model
    The Earth Gravitational Models (EGM) are a series of geopotential models of the Earth published by the National Geospatial-Intelligence Agency (NGA)....
    11 KB (1,292 words) - 22:16, 11 September 2024
  • Thumbnail for World Geodetic System
    defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also describes the associated Earth Gravitational Model (EGM) and World...
    24 KB (2,842 words) - 03:41, 26 April 2025
  • Thumbnail for Geoid
    would take under the influence of the gravity of Earth, including gravitational attraction and Earth's rotation, if other influences such as winds and...
    29 KB (3,445 words) - 00:20, 12 May 2025
  • Thumbnail for Gravity of Earth
    observed gravitational acceleration at a location Gravity of Mars – Gravitational force exerted by the planet Mars Newton's law of universal gravitation – Classical...
    32 KB (3,826 words) - 04:20, 25 May 2025
  • of the gravitational source. It is a vector oriented toward the field source, of magnitude measured in acceleration units. The gravitational acceleration...
    12 KB (1,566 words) - 08:20, 8 April 2025
  • Thumbnail for Gravitational constant
    The gravitational constant is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal...
    45 KB (5,215 words) - 20:33, 14 May 2025
  • universal gravitation thus takes the form: F = G m 1 m 2 r 2 , {\displaystyle F=G{\frac {m_{1}m_{2}}{r^{2}}},} where F is the gravitational force acting...
    28 KB (3,839 words) - 02:05, 24 May 2025
  • Thumbnail for Gravitational binding energy
    gravitational binding energy of a system is the minimum energy which must be added to it in order for the system to cease being in a gravitationally bound...
    10 KB (1,512 words) - 14:46, 17 May 2025
  • Thumbnail for Gravity
    known as gravitation or a gravitational interaction, is a fundamental interaction, a mutual attraction between all massive particles. On Earth, gravity...
    80 KB (8,564 words) - 02:36, 20 May 2025
  • DTED (category Digital elevation models)
    prediction. Terrain elevations are described as the height above the Earth Gravitational Model 1996 (EGM96) geoid, not the WGS84 reference ellipsoid. DTED supports...
    3 KB (280 words) - 00:48, 2 October 2024
  • charged or polarized ellipsoidal bodies. The gravitational potential (V) at a location is the gravitational potential energy (U) at that location per unit...
    20 KB (2,620 words) - 09:41, 12 May 2025
  • Thumbnail for Geodetic Reference System 1980
    ellipsoid and a normal gravity model. The GRS80 gravity model has been followed by the newer more accurate Earth Gravitational Models, but the GRS80 reference...
    7 KB (1,078 words) - 12:07, 24 August 2024
  • Thumbnail for Figure of the Earth
    the Earth is the size and shape used to model planet Earth. The kind of figure depends on application, including the precision needed for the model. A...
    25 KB (2,946 words) - 21:41, 7 May 2025
  • The standard gravitational parameter μ of a celestial body is the product of the gravitational constant G and the mass M of that body. For two bodies...
    15 KB (1,492 words) - 06:26, 25 May 2025
  • Thumbnail for First observation of gravitational waves
    major gravitational wave finding". The Telegraph. Archived from the original on 12 February 2016. Could Gravitational Waves Ever Cause Damage On Earth? Blanchet...
    70 KB (7,592 words) - 19:07, 6 May 2025
  • Thumbnail for History of gravitational theory
    Pioneers of gravitational theory In physics, theories of gravitation postulate mechanisms of interaction governing the movements of bodies with mass. There...
    90 KB (11,016 words) - 16:01, 23 May 2025
  • Thumbnail for Gravitational field
    In physics, a gravitational field or gravitational acceleration field is a vector field used to explain the influences that a body extends into the space...
    12 KB (1,421 words) - 19:13, 26 April 2025
  • require measurements at greater distances from the Earth, or a larger gravitational source. Gravitational time dilation was first described by Albert Einstein...
    17 KB (2,404 words) - 09:59, 25 May 2025
  • Thumbnail for Earth's orbit
    distance at which the Earth's gravitational influence is stronger than the more distant Sun and planets. Objects orbiting the Earth must be within this...
    17 KB (1,860 words) - 12:44, 24 March 2025
  • Thumbnail for Geo URI scheme
    (specifically the "ground elevation", relative to the current geoid – Earth Gravitational Model – attached to WGS84), and the concept is extended for other coordinates...
    15 KB (1,944 words) - 12:22, 20 May 2025
  • Thumbnail for Entropic gravity
    or MOND, which holds that at a gravitational acceleration threshold of approximately 1.2×10−10 m/s2, gravitational strength begins to vary inversely...
    28 KB (3,736 words) - 06:45, 9 May 2025
  • Thumbnail for Gravitation of the Moon
    explain the gravitational variations, and uplift of the crust-mantle interface is required as well. Based on Lunar Prospector gravitational models, it has...
    22 KB (2,337 words) - 19:44, 22 May 2025
  • Gravitational waves are oscillations of the gravitational field that travel through space at the speed of light; they are generated by the relative motion...
    106 KB (12,709 words) - 10:27, 10 April 2025
  • Thumbnail for Geocentric model
    geocentric model (also known as geocentrism, often exemplified specifically by the Ptolemaic system) is a superseded description of the Universe with Earth at...
    74 KB (8,585 words) - 04:09, 26 May 2025
  • elliptical orbits. The Earth Gravitational Model 1996 (EGM96) contains 130,676 coefficients that refine the model of the Earth's gravitational field.: 40  The...
    20 KB (3,514 words) - 15:47, 22 January 2025
  • Thumbnail for Equatorial bulge
    acceleration. At the Equator, the effective gravitational acceleration is 9.7805 m/s2. This means that the true gravitational acceleration at the Equator must be...
    15 KB (1,940 words) - 21:00, 24 May 2025
  • by a model of the planet's gravitational field. Typically the model is based on simplifying assumptions, such as that, under its self-gravitation and rotational...
    20 KB (2,991 words) - 10:20, 12 May 2025
  • geopotential model is the theoretical analysis of measuring and calculating the effects of Earth's gravitational field (the geopotential). The Earth is not...
    25 KB (1,976 words) - 22:02, 15 April 2025
  • Thumbnail for Lagrange point
    an unbalanced gravitational force at a point, altering the orbit of whatever is at that point. At the Lagrange points, the gravitational forces of the...
    51 KB (5,817 words) - 13:33, 24 May 2025
  • Thumbnail for Orbital decay
    orbital motion, such as fluid friction, gravitational anomalies, or electromagnetic effects. For bodies in low Earth orbit, the most significant effect is...
    14 KB (1,962 words) - 05:37, 19 May 2025